Design and Evaluation of a QoS-Adaptive System for Reliable Multicasting

The talk presents and studies a reliable multicast protocol
whose objective is to deliver a message to all intended destinations,
despite possible crashes of the sender and other processes, and
communication failures. The protocol enables QoS metrics such as
absolute and relative latencies and the probability of reliable
delivery, to be negotiated prior to service provisioning. Moreover, it
adapts certain parameters dynamically in order to minimize the message
traffic required to achieve the negotiated QoS metrics. The performance
of the protocol is analyzed mathematically under simplifying
assumptions. The accuracy of the approximations is evaluated by
simulations.